Traffic aware fuzzy-tuned delay range for wireless body area networks medium access control protocol (MAC)

Wireless biomedical sensor networks in healthcare have been a great motivation in providing a timely and effective response in healthcare services as one of the many target applications such networks have. Being heterogeneous in real-time traffic attributes associated with each biological sensor, organizing the access to the shared wireless medium becomes a subtle task. This paper exploits a fuzzy logic decision system integrating application traffic diversity to propose a dynamic controlled range for the randomly chosen backoff periods. The dynamically adjusted upper and lower bounds of backoff period introduced on top of the IEEE 802.15.4 medium access control protocol has resulted in a more significant delivery ratio as demonstrated by simulation results in Castalia.